Storage engines

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variabel | Penampungan Penyangga | Status InnoDB ]

=====================================
2025-11-27 17:01:08 0x7f711c034700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 13 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 6330 srv_active, 0 srv_shutdown, 5253 srv_idle
srv_master_thread log flush and writes: 11583
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 20768
OS WAIT ARRAY INFO: signal count 18460
RW-shared spins 0, rounds 7944, OS waits 3930
RW-excl spins 0, rounds 2959, OS waits 104
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 7944.00 RW-shared, 2959.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 70911
Purge done for trx's n:o < 70911 undo n:o < 0 state: running but idle
History list length 11
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421598773838328, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421598773834072, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421598773829816, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (write thread)
Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] ,
 ibuf aio reads:, log i/o's:, sync i/o's:
Pending flushes (fsync) log: 0; buffer pool: 0
864 OS file reads, 102891 OS file writes, 49775 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 19.77 writes/s, 8.69 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 0 merges
merged operations:
 insert 0, delete mark 0, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 9 buffer(s)
Hash table size 69257, node heap has 2 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 3 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
12.46 hash searches/s, 0.92 non-hash searches/s
---
LOG
---
Log sequence number 31502666
Log flushed up to   31502666
Pages flushed up to 31495666
Last checkpoint at  31488851
0 pending log flushes, 0 pending chkp writes
30570 log i/o's done, 4.62 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 130928
Buffer pool size   16024
Free buffers       15103
Database pages     855
Old database pages 329
Modified db pages  13
Percent of dirty pages(LRU & free pages): 0.081
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 705, created 150, written 64806
0.00 reads/s, 0.00 creates/s, 13.46 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 855, unzip_LRU len: 0
I/O sum[0]:cur[2], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=905, Main thread ID=140123031201536, state: sleeping
Number of rows inserted 4, updated 16094, deleted 0, read 868317
0.00 inserts/s, 3.23 updates/s, 0.00 deletes/s, 6.61 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 2563
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================